The World Before Plate Tectonics

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Science Archean Eon Boring BIllion Columbia complexly dinos Dinosaurs eons eukaryotes euxinia evolution of life fossils hank green John green lithosphere natural history Nuna oceanic ridges paleo paleontology PBS PBS Digital Studios plate tectonics prokaryotes Proterozoic rock cycle Rodinia SciShow seafloor spreading subduction sulfur supercontinent supercontinent cycle volcano
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